UHP Ladle Furnace Graphite Electrode Thermal Shock Resistance
UHP Graphite Electrode
Made up of high quality needle coke, UHP graphite electrode is our flagship product, it is featured with low resistivity, small thermal expansion coefficient, and good thermal shock resistance. It is capable of carrying the current density more than 25A/cm2.
- Product Details
Made up of high quality needle coke, UHP graphite electrode is our flagship product, it is featured with low resistivity, small thermal expansion coefficient, and good thermal shock resistance. It is capable of carrying the current density more than 25A/cm2.
| Typical Properties of Graphite Electrode | ||||
| Properties | Position | Unit | UHP | |
| 300-600mm | 650-800mm | |||
| Specific Resistance | Body | m | 4.8-5.8 | 4.6-5.8 |
| Nipple | 3.8-4.5 | 3.8-4.5 | ||
| Bending Strength | Body | Mpa | 10.0-14.0 | 10.0-14.0 |
| Nipple | 20.0-26.0 | 20.0-26.0 | ||
| Young's Modulus | Body | Gpa | 9.0-13.0 | 10.0-14.0 |
| Nipple | 15.0-18.0 | 15.0-18.0 | ||
| Bulk Density | Body | g/cm3 | 1.68-1.74 | 1.70-1.74 |
| Nipple | 1.77-1.82 | 1.78-1.84 | ||
| CTE(100-600°C) | Body | ×10 -6/C | 1.1-1.4 | 1.1-1.4 |
| Nipple | 0.9-1.2 | 0.9-1.2 | ||
| Ash Content | % | 0.3 | 0.3 |
Application
Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.
l DC electric arc furnace.
l AC electric arc furnace.
l Submerged arc furnace.
l Ladle furnace.
Manufacturing process
Graphite electrode is mainly made of petroleum coke and needle coke, mixed with coal pitch, getting through processes of calcinations, kneading, forming, baking, graphitizing and machining, finally to be products. The following flow diagram will help you understand the process better.
Package
Separated package---The electrodes and nipples are packaged separately.
Pre-connection package--- The nipples are connected with one end of electrode body in advance, and then both of them are packaged by wooden rafters, strapped with steel bands outside, the threaded nipples and end faces are covered by foamed plastic caps in order to protect them from damage.
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